do you have another video card and have the integrated card disabled? If not, try reboot. (seriously) If yes, you should switch on the integrated card. (from BIOS)

Hi, Shaoqiang, I tried it on two computers. One is NUC, ubuntu16.04LTS, Processor Intel Core i5-5250U, Graphics Intel HD Graphics 6000(Broadwell GT3); the other is laptop ubuntu 16.04LTS, Processor Intel Core i5-8300H, Graphics Gallium0.4 on llvmpipe(LLVM 4.0,256bits)(I removed the Nvidia driver for another video card). However, the results are same.

Could you tell me some sysetems or CPU configurations that work fine with integrated card under openvino? Because there is no clear official instruction. Thanks